<?php
// use App\Index;
/**
*
*/
date_default_timezone_set('PRC');
define('ROOT',dirname(__FILE__));


class Base{
	public function sayHello(){
		echo "Hello";
	}
}


trait Say{
	public function sayHello(){
		parent::sayHello();
		echo "World";
	}
}

class SayHi extends Base{
	// use Say;
	public function sayHello(){
		parent::sayHello();
	}
}

$say = new SayHi();
$say->sayHello();
